feat(extensions/crypto): implement verify() for RSA (#11312)

cli/tests/unit/webcrypto_test.ts

@@ -1,5 +1,54 @@
 import { assert, assertEquals, unitTest } from "./test_util.ts";
 
+// TODO(@littledivy): Remove this when we enable WPT for sign_verify
+unitTest(async function testSignVerify() {
+  const subtle = window.crypto.subtle;
+  assert(subtle);
+  for (const algorithm of ["RSA-PSS", "RSASSA-PKCS1-v1_5"]) {
+    for (
+      const hash of [
+        "SHA-1",
+        "SHA-256",
+        "SHA-384",
+        "SHA-512",
+      ]
+    ) {
+      const keyPair = await subtle.generateKey(
+        {
+          name: algorithm,
+          modulusLength: 2048,
+          publicExponent: new Uint8Array([1, 0, 1]),
+          hash,
+        },
+        true,
+        ["sign", "verify"],
+      );
+
+      const data = new Uint8Array([1, 2, 3]);
+      const signAlgorithm = { name: algorithm, saltLength: 32 };
+
+      const signature = await subtle.sign(
+        signAlgorithm,
+        keyPair.privateKey,
+        data,
+      );
+
+      assert(signature);
+      assert(signature.byteLength > 0);
+      assert(signature.byteLength % 8 == 0);
+      assert(signature instanceof ArrayBuffer);
+
+      const verified = await subtle.verify(
+        signAlgorithm,
+        keyPair.publicKey,
+        signature,
+        data,
+      );
+      assert(verified);
+    }
+  }
+});
+
 unitTest(async function testGenerateRSAKey() {
   const subtle = window.crypto.subtle;
   assert(subtle);